S-ALCDEF is for those who have basic text data files, e.g., JD, magnitude[, magerror].
Usually with a minimal amount of editing, these files can be uploaded to the ALCDEF
database without creating the more detailed and rigorous standard ALCDEF files.
See the ALCDEF documentation for details
Click here to go to the S-ALCDEF upload page
N.B. If using Gaia G magnitudes, you must set MAGBAND=GG (Gaia G). The single-letter 'G' can
be confused with the Sloan g magband. There is no 'G' filter, so use FILTER=X, where X is one of the